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Product Resources

Blast Away the Competition. When you want to set a new record at your car club's horn competition, get the edge with the Kleinn UltraBlastmaster Valve Upgrade Kit. This small and simple change to the Model 730 Demon system pushes it to the maximum of sound output thanks to a boost in the amount of air supplied to the horns.

Reliable Solenoids. Of course, your train horn can only release those terrifying blasts of sound as long as the solenoids are operating properly. The VX6003 solenoid valves included in this kit are built to last, giving you years of honking without any need for maintenance or repairs. The included air supply line is tough enough to last too.

Designed to Fit. This upgrade kit fits the Model 730 train horn from Kleinn, so installation is quick and easy because all of the fittings and lines are made to match the existing parts.

Application. The Kleinn UltraBlastmaster Valve Upgrade Kit works with Model 730 installed on any 2007 and 2018 GMC Sierra.